📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!


    Question

    Identify the odd one: 3, 5, 7, 11, 13, 17, 19,

    21
    A 21 Correct Answer Incorrect Answer
    B 13 Correct Answer Incorrect Answer
    C 11 Correct Answer Incorrect Answer
    D 19 Correct Answer Incorrect Answer

    Solution

    Given: 3, 5, 7, 11, 13, 17, 19, 21 3 → Prime 5 → Prime 7 → Prime 11 → Prime 13 → Prime 17 → Prime 19 → Prime 21 → Not prime All numbers except 21 are prime numbers. So, 21 is odd one out. Thus, correct option is (a). 

    Practice Next

    Relevant for Exams:

    ask-question